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Intraoperative blood loss and surgical time according to the direction of maxillary movement

Archives of Plastic Surgery 2020년 47권 5호 p.411 ~ 418
김효성, 손지환, 정지혁, 김경식, 최준, 양정열,
소속 상세정보
김효성 ( Kim Hyo-Seong ) - Myongji Hospital Department of Plastic and Reconstructive Surgery
손지환 ( Son Ji-Hwan ) - Myongji Hospital Department of Plastic and Reconstructive Surgery
정지혁 ( Chung Jee-Hyeok ) - Seoul National University Children’s Hospital Division of Pediatric Plastic Surgery
김경식 ( Kim Kyung-Sik ) - Myongji Hospital Department of Plastic and Reconstructive Surgery
최준 ( Choi Joon ) - Myongji Hospital Department of Plastic and Reconstructive Surgery
양정열 ( Yang Jeong-Yeol ) - Myongji Hospital Department of Plastic and Reconstructive Surgery

Abstract


Background: Excessive bleeding is one of the most severe complications of orthognathic surgery (OGS). This study investigated the associations of intraoperative blood loss and surgical time with the direction of maxillary movement.

Methods: This retrospective study involved patients who underwent OGS from October 2017 to February 2020. They were classified based on whether maxillary setback was performed into groups A1 and B1, respectively. Relative blood loss (RBL, %) was used as an indicator to compare intraoperative blood loss between the two groups. The surgical time of the two groups was also measured. Subsequently, the patients were reclassified based on whether posterior impaction of the maxilla was performed into groups A2 and B2, respectively. RBL and surgical time were measured in the two groups. Simple linear and multiple regression analyses were performed. P-values <0.05 were considered to indicate statistical significance.

Results: Eighteen patients were included. The RBL and surgical time for the groups were: A1, 13.15%±5.99% and 194.37±42.04 minutes; B1, 12.41%±1.89% and 196.50±46.07 minutes; A2, 13.94%±3.82% and 201.00±39.70 minutes; and B2, 9.61%±3.27% and 188.84±38.63 minutes, respectively. Only RBL showed a statistically significant difference between the two groups (A2 and B2, P=0.04).

Conclusions: Unlike maxillary setback, posterior impaction of the maxilla showed a significant association with RBL during surgery. When performing posterior impaction of the maxilla, clinicians need to pay particular attention to surgery and postoperative care.

키워드

Orthognathic surgery; Blood loss; Operative time

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